A four-year-old boy born with a rare congenital heart condition known as a "criss-cross heart" has undergone a complex surgical procedure made possible by a detailed 3D-printed model of his heart. Wyatt Keller, from Cleveland, Ohio, was diagnosed as an infant with the unusual defect, where the anatomical connections between the heart’s upper and lower chambers are twisted, causing blood to flow in an atypical crossed pattern.

Although Wyatt was closely monitored throughout his early years, doctors observed a decline in his energy levels approaching his fourth birthday. Physicians at the Cleveland Clinic Children’s Hospital determined that he required intricate surgery to correct the condition. To better prepare for the operation, surgeons created a precise 3D-printed replica of Wyatt’s heart, allowing them to carefully plan the procedure in advance.

The surgery was carried out in January by Dr. Hani Najm, chair of pediatric and congenital heart surgery at the hospital. He employed a specialized technique he developed, known as a ventricular switch, to reroute blood flow within Wyatt’s heart. This method reconstructs the interior of the heart to enable both lower chambers, or ventricles, to effectively pump blood. Dr. Najm noted that the 3D model provided critical insight into Wyatt’s unique heart anatomy prior to the surgery, enabling him to determine the best approach before entering the operating room.

According to Cleveland Clinic pediatric cardiologist Dr. Malek Yaman, criss-cross heart anatomy can occasionally exist without significantly impairing blood flow, but it more commonly occurs alongside other cardiac abnormalities that eventually necessitate surgical intervention. Following the successful procedure, Wyatt made a full recovery and has returned to normal activities, including biking and playing T-ball, while remaining under medical observation. Doctors do not currently anticipate any need for further surgeries.

Wyatt’s parents expressed deep gratitude for the care their son received. His mother, Anna Keller, said they never felt the need to seek additional opinions, citing confidence in the medical team’s expertise. His father, Jonathon Keller, described the experience as a blessing, emphasizing the importance of having the right team and resources to support their family through the treatment process.